Change detection in INAR(p) processes against various alternative hypotheses

Details Change detection in INAR(p) processes against various alternative hypotheses Change detection in INAR(p) processes against various alternative hypotheses

2011-11-10

arxiv.org/abs/1111.2532v1

Mathematics

Statistics Theory

Scientific paper

Change in the coefficients or in the mean of the innovation distribution of an INAR(p) process is a sign of disturbance that is important to detect. The methods of this paper can test for change in any one of these quantities separately, or in any collection of them. They are available in forms that make one-sided tests possible, furthermore, they can be used to test for a temporary change. The tests are based on a CUSUM process using conditional least squares estimators of the parameters. Under alternative hypotheses consistency of the tests is proved and the large sample properties of the change-point estimator are also explored.

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